Carbureter.



H. DENNIS.

GARBUBETBR.

APPLIUATION FILED un 8.11911.

Patented Sept. 26, 1911.

o o ,O o4 o Ooo/700 O o O o O V )A04/24A W Arron/v51 HOWARD DENNIS, 0F SPOKANE,` WASHINGTON.

` CARBURETER.

Specification of Letters Patent.

Patented Sept. 26, 1911.

Application filed May 8, 1911. Serial No. 625,789.

To all whom it may concern:

Be itV known that I, HOWARD DENNIS, a citizen of the United States, of America, residing at Spokane, in the county of Spokane and State of iVashington, have invented certain new and useful Improvements in Carbureters, of which the following' is 'a' specitieation. y

y rthis invention pertains to carburetors and has for its object to provide a mechanism that is economical as to space and yet provide-a mixing chamber of Sufficient eapaeity for all practical purposes, and to pro- :vide an automatically adjusted supply ol? gaSolene and air to meet the requirements of the change in Speeds of an engine from a higher to a lower and a lower to a higher and at the same time provide Suilieient eapaeity in one sized carbureters to serve the purposes for-all sizes of enginesand any number ot' eylinders.l t

accomplish my purpose b y the n1eehanism shown in the drawings, in whieh y Figure l, is a Side elevation of the deviee, Fig. 2, is a broken away top View jot' the same, lf'ig. 3, is a bottom View of thesame, Fig. 4l, is a top plan View ,of the saine, and Fig. 5, is a vtn'tieal section ot the same taken on the line of Fig. 4.

The mixing ehamber l() has vertical sides 11, a fiat bottom l2 and flat top 13, the Sides meeting eaeh other at right angles and the bottoni and top eaeh eonneeting with the Sides at lright angles. This gives a greater 'spaee within the chamber 1t) l'or mixing; purl'ioses than when the chamber is made round or ovalas is the usual eustom. This permits ot' the use ol" greater economy ot' apaee in the meehanieal eonstruet'ion surroundinethe, engine.' 'lhe lloat feeding de Viee oeeupies the chamber ifi adjoining the ehamber lt). needle valve 15 extends diagonally through the ehaniber 14, and into thel chamber l() with the opening lt' at about the renter o't the ehan'iber 1t).

A prin'lary air Supply pipe 17 extends diagonally through the wall 11 ot the ehaxnber 1,0 with its inner end opening at a point directly underneath the opening 1G of the needle Valve 15. Auxiliary air is supplied to the chamber 10 through ball valves in the bottom thereof, such valves being of different sizes, the smallest 19 be* ing at the center, the largest t2() at the outer edges thereof, the intermediate sizes 2l iutervening. The object of having the smallest at the center, is, that the first valve to open should be as near'direetly underneath the opening 16 in the needle valve 15 as possible in order that the air coming through the valve will have as near a direct passage through the gaSole-ne Supply as possible, it being understood that the spe eitic gravity 'ot' the sn'laller balls is less than that ot the larger sizes and that for ordinary use only a portion of the valves would be required, and that when au extraordinary amount o'l' air is required it is likely to be a't'ter the engine haay beeonie. well heated and explosions can be readily ellioeted without the necessity ol Suo-h partieular distinction. The supply ot `gasolene through the needle valve 15 is regulated by the needle operating through a threaded aperture. 23 in the lower end ill: ot the valve 15, and the adjustment, ot the lloat 25 in the ehamber 14 b v means of theI threaded end .t olt the `valve 2T operating through the threaded aperture 2S. The gasolene supply pipe Vis attaehed to the threaded aperture QU.' A Screen Bt) .secured horixontally nei-oss the eavities Ii retains the balls ll). 2() and 2l within their operaiive-spheres.

[latine thus deseribed luy invention, what l elaim as.' new and usel'ui and desire to Iaeeure by lmttersdatent', is,

l. ln a earlaireter, a lnixilr;r ehamlarhaving' a lat top and bottoln and I'our vertieai aideeI joining! at, right angles, an adjustable gasolene l'eed with a primary air yeupply voudra-ted to the point ol gaaolene disu elan-ge. ball valves in the bottom ol the (chamber graduated in .aire t'rom the eenter to the outer edges, the smallest being.;` in. the eenter and the largest at, the outer edges with intermediate sizes between.

2. In a `carburetei, a mixing chamber being in the center, the-largest at the' outer having a fiat top and bottom and four Ver.- edges and intermediate sizes "between, 1D tical sides joining each. other at right an- In testimony whereof I `allix myfsignagies, provided with a gasolene supply, 'an ture in presence' of two witnesses. unobstructed primary air supply through HOWARD DENNIS.

the side of the chamber and an auxiliary Witnesses:

air supply through graduated ball valves in GEO. E. CA-NHELD,

the bottom of the same, the smallest Valves WILLIAM II. KAYE. 

